An insert for an injection-molding nozzle of an injection-molding device, wherein the injection-molding nozzle has a nozzle body which extends in a longitudinal direction and in which at least one melt duct for a flowable compound to be processed is formed along the longitudinal direction between a first end and a second end, wherein the at least one melt duct opens into a mold impression, formed in the injection mold, of the injection-molding device. The insert has a main body which extends along the longitudinal direction. The main body of the insert has a portion which, in the mounted position of the insert in the injection-molding device, is arranged in the region of the second end of the nozzle body, and a second portion which, in the mounted position of the insert in the injection-molding device, is supported on a tool plate of the injection-molding device.

A hot runner-type injection structure 4 is provided with: a hot runner nozzle 5; and a valve pin 6 that is provided to be able to advance and retreat in the axial line O1 direction inside the flow passage of the hot runner nozzle 5 and that opens/closes the flow passage by coming into contact/being spaced apart from a valve opening/closing part 13 which has a tip part disposed on the tip side of the hot runner nozzle 5, wherein a heat insulating groove 16, which is recessed inward toward the axial line O1 side from an outer circumferential surface and extends in the circumferential direction, is provided on the outer periphery in a valve pin contact section M in which the valve opening/closing part 13 of the hot runner nozzle 5 is formed.

An insert (10) adapted to be placed at the gate of an injection molding machine around a tip of a molten material injector, is disclosed.

The inset comprises or consists of a cup-shaped first element (40), comprising or consisting of lateral walls (45) that delimit a first opening for housing the injector body and a bottom (44) centrally provided with a second opening (46), and a second element (20), provided with a third central opening (26) having a major dimension that is smaller than that of the second opening (36). The second element (20) is connectable to said bottom (44) so that the second (46) and third opening (26) are aligned.

An insulation system includes a panel that is configured to fit with a hot runner of an injection molding machine. The panel has panel walls that define a closed interior cavity. There is an insulation material disposed in the closed interior region. The panel has a panel geometry that is complementary to the geometry of the hot runner such that the panel fits intimately with the hot runner.

An injection molding system (1) is described, for at least one fat-containing product in at least one die (9), equipped with at least one injection means (3), the injection means (3) being equipped therein with at least one injection channel (2), the system (1) comprising at least one heating element (5) arranged inside the injection means (3) in parallel with the injection channel (2) and at least one male half-shell (8) of the die (9), connected to at least one lower surface of at least one cooled support means (7).

An insulation system includes a panel that is configured to fit with a hot runner of an injection molding machine. The panel has panel walls that define a closed interior cavity. There is an insulation material disposed in the closed interior region. The panel has a panel geometry that is complementary to the geometry of the hot runner such that the panel fits intimately with the hot runner.

In order to provide a sprue-bush which is capable of more suitably cooling a melt raw resin in a flow path for a raw resin, there is provided a sprue-bush comprising a flow path for a raw resin and a flow path for cooling media located around the flow path for the raw resin, wherein the sprue-bush comprises a low heat transfer portion, the low heat transfer portion being located at a local region between an upper side portion of the flow path for the raw resin and the flow path for the cooling media, the low heat transfer portion being in a heat transfer relatively lower than that of a region other than the local region.

The disclosure relates to an insert for use in an injection molding nozzle, with an insert body at least made from a high thermal conductivity material, in which at least one flow channel is formed with an inlet opening and an outlet opening, wherein the insert body comprises a neck section, for joining to the injection molding nozzle, an end section, for inserting into a mold cavity of a mold insert, and a flange with a stopping surface projecting radially with respect to the end section, wherein the stopping surface is formed on a surface of the radially projecting flange facing the outlet opening. According to the disclosure, the stopping surface and the end section have at least partly an outer coating made of a second material with a low thermal conductivity.

A sprue bush that is attached to a mold used to mold synthetic resin includes: a sprue bush main body (10) that has a flow passage, through which synthetic resin injected from an injection molding nozzle flows, and a recessed portion (13) formed in a surface of the sprue bush main body on a synthetic resin injection port side thereof; and a bush component (20) that is embedded in the recessed portion (13), the bush component (20) including: a nozzle contact surface (21) that is contacted by the injection molding nozzle; a through hole (22) that extends from an opening in the nozzle contact surface (21) and communicates with the flow passage in the sprue bush main body so as to form the flow passage for the synthetic resin; and a plurality of ribs (23) that extend radially outward from an inner peripheral surface of the through hole.

An injection molding system (1) is described, for at least one fat-containing product in at least one die (9), equipped with at least one injection means (3), the injection means (3) being equipped therein with at least one injection channel (2), the system (1) comprising at least one heating element (5) arranged inside the injection means (3) in parallel with the injection channel (2) and at least one male half-shell (8) of the die (9), connected to at least one lower surface of at least one cooled support means (7).